Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Southwest Climate Region

Precipitation Rankings, April 2001

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
April 2001
1-Month 		1.08"
(27.43mm)		 1.06"
(26.92mm)		 0.02"
(0.51mm)		 79th Driest
Driest since:
 1989
50th Wettest
Wettest since:
 1900
Ties: 1916, 1973
Mar–Apr 2001
2-Month 		2.26"
(57.40mm)		 2.21"
(56.13mm)		 0.05"
(1.27mm)		 80th Driest
Driest since:
 1972
49th Wettest
Wettest since:
 1905
Ties: 1897
Feb–Apr 2001
3-Month 		3.26"
(82.80mm)		 3.21"
(81.53mm)		 0.05"
(1.27mm)		 75th Driest
Driest since:
 1972
54th Wettest
Wettest since:
 1905
Ties: 2000
Jan–Apr 2001
4-Month 		4.50"
(114.30mm)		 4.20"
(106.68mm)		 0.30"
(7.62mm)		 86th Driest
Driest since:
 1972
43rd Wettest
Wettest since:
 1905
Dec 2000–Apr 2001
5-Month 		5.00"
(127.00mm)		 5.21"
(132.33mm)		 -0.21"
(-5.33mm)		 66th Driest
Driest since:
 2002
62nd Wettest
Wettest since:
 1905
Nov 2000–Apr 2001
6-Month 		5.94"
(150.88mm)		 6.10"
(154.94mm)		 -0.16"
(-4.06mm)		 67th Driest
Driest since:
 1904
61st Wettest
Wettest since:
 1941
Oct 2000–Apr 2001
7-Month 		8.80"
(223.52mm)		 7.23"
(183.64mm)		 1.57"
(39.88mm)		 108th Driest
Driest since:
 1904
20th Wettest
Wettest since:
 1941
Sep 2000–Apr 2001
8-Month 		9.43"
(239.52mm)		 8.60"
(218.44mm)		 0.83"
(21.08mm)		 90th Driest
Driest since:
 2002
38th Wettest
Wettest since:
 1941
Aug 2000–Apr 2001
9-Month 		11.38"
(289.05mm)		 10.61"
(269.49mm)		 0.77"
(19.56mm)		 91st Driest
Driest since:
 2021
37th Wettest
Wettest since:
 1905
Jul 2000–Apr 2001
10-Month 		12.48"
(316.99mm)		 12.48"
(316.99mm)		 0.00"
(0.00mm)		 70th Driest
Driest since:
 2021
58th Wettest
Wettest since:
 1905
Jun 2000–Apr 2001
11-Month 		13.67"
(347.22mm)		 13.41"
(340.61mm)		 0.26"
(6.61mm)		 76th Driest
Driest since:
 2021
52nd Wettest
Wettest since:
 1905
May 2000–Apr 2001
12-Month 		14.19"
(360.43mm)		 14.53"
(369.06mm)		 -0.34"
(-8.63mm)		 65th Driest
Driest since:
 2021
63rd Wettest
Wettest since:
 1942
Nov 1999–Apr 2001
18-Month 		18.72"
(475.49mm)		 20.64"
(524.26mm)		 -1.92"
(-48.77mm)		 39th Driest
Driest since:
 2021
88th Wettest
Wettest since:
 1942
Ties: 1960
May 1999–Apr 2001
24-Month 		28.61"
(726.69mm)		 29.05"
(737.87mm)		 -0.44"
(-11.18mm)		 65th Driest
Driest since:
 2022
62nd Wettest
Wettest since:
 1942
Ties: 1989
May 1998–Apr 2001
36-Month 		43.48"
(1,104.39mm)		 43.55"
(1,106.17mm)		 -0.07"
(-1.78mm)		 68th Driest
Driest since:
 1904
58th Wettest
Wettest since:
 1907
Ties: 1938
May 1997–Apr 2001
48-Month 		61.51"
(1,562.35mm)		 58.02"
(1,473.71mm)		 3.49"
(88.64mm)		 99th Driest
Driest since:
 1904
26th Wettest
Wettest since:
 1986
May 1996–Apr 2001
60-Month 		77.17"
(1,960.12mm)		 72.49"
(1,841.25mm)		 4.68"
(118.87mm)		 100th Driest
Driest since:
 1957
24th Wettest
Wettest since:
 1987

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